Now showing items 1433-1452 of 3682

  • Neuvonen, Pekka T.; Vines, Lasse; Kuznetsov, Andrej Yu.; Svensson, Bengt G.; Du, Xiaolong; Tuomisto, Filip; Hallén, Anders (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2009)
    The interaction between group-Ia elements in ZnO have been studied by implanting Na into hydrothermally grown ZnO samples containing ~4×1017 Li/cm3 and employing secondary ion mass spectrometry for sample analysis. ...
  • Kolevatov, Ilia; Svensson, Bengt Gunnar; Monakhov, Eduard (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
    The divacancy (V2) is one of the fundamental defects in silicon. However, the interaction of V2 with hydrogen is still not fully understood. In the present work, deep level transient spectroscopy (DLTS) results on ...
  • Dziadkowiec, Joanna (Doctoral thesis / Doktoravhandling, 2019)
    The macroscopic mechanical strength of rocks and mineral-based materials is often controlled by micro- and nanoscale mechanisms occurring at solid-solid contacts. Such interfaces are critical to deformation processes as ...
  • Malmbekk, Helge (Master thesis / Masteroppgave, 2009)
    Thin films of transparent conductive oxides as active electrodes in combination with silicon substrates are pursued for new generation of solar cells. A main issue is to obtain structures with optimum interfacial properties ...
  • Spicher, Andres; LaBelle, James; Bonnell, John W.; Roglans, Roger; Moser, Chrystal; Fuselier, Stephen A.; Bounds, Scott; Clausen, Lasse; Di Mare, Francesca; Feltman, Connor A.; Jin, Yaqi; Kletzing, Craig; Miloch, Wojciech Jacek; Moen, Jøran Idar; Oksavik, Kjellmar; Sawyer, Rhyan; Takahashi, Toru; Yeoman, Tim K. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    Patchiness, defined as spatial heterogeneity in distribution of organisms, is a common phenomenon in zooplankton including ichtyoplankton. In heterogeneous landscapes, depending on the scale of prey and predatory distributions, ...
  • Bjørgen, Håkon (Master thesis / Masteroppgave, 2010)
    Det er en todelt oppgave hvor første del omhandler atom-interferometri basert på lyspulser. Mekaniske effekter på atomer fra lys er diskutert. To spesifikke interferometer er diskutert i detalj. Tilslutt noen anvendelser. Den ...
  • Lessard, Marc R.; Damsell, Alec; Sadler, F. Brent; Oksavik, Kjellmar; Clausen, Lasse (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    This work addresses interhemispheric differences in cusp-related neutral density enhancements. The focus is on enhancements that are driven by Poleward Moving Auroral Forms (PMAF), which provide a repetitive sequence of ...
  • Jin, Yaqi; Xiong, Chao (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    The high‐latitude ionosphere is highly dynamical with significant irregularities and density gradients. However, the spatial and temporal distributions of density gradients and irregularities are very different between the ...
  • Spicher, Andres; Clausen, Lasse Boy Novock; Miloch, Wojciech Jacek; Lofstad, Victoria; Jin, Yaqi; Moen, Jøran Idar (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
    The Swarm satellites offer an unprecedented opportunity for improving our knowledge about polar cap patches, which are regarded as the main space weather issue in the polar caps. We present a new robust algorithm that ...
  • Kotova, Daria; Jin, Yaqi; Miloch, Wojciech Jacek (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    With the data from the Swarm satellite mission, we study the variability of ionospheric plasma parameters for low and high solar activities. We focus on the electron density measured by Swarm and derived parameters and ...
  • Bhandari, Shailendra (Master thesis / Masteroppgave, 2021)
  • Bølstad, Joar (Master thesis / Masteroppgave, 2009)
    Oppgaven gir en innføring i anyoner, partikler med fraksjonell statistikk som kun finnes i to-dimensjonale systemer. Disse partiklene interpolerer mellom bosoner og fermioner, og derfor behandles også de to-dimensjonale ...
  • Moura, Marcel; Måløy, Knut Jørgen; Flekkøy, Eirik Grude; Toussaint, Renaud (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    The intermittent dynamics of slow drainage flows in a porous medium is studied experimentally. This kind of two-phase flow is characterized by a rich burst activity and our setup allows us to characterize those bursts ...
  • Zabrodin, Evgeny; Bravina, Larissa; Eyyubova, Gyulnara; Lokhtin, Igor; Malinina, Liudmila; Petrushanko, Sergei; Snigirev, Alexander (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
    The Monte Carlo event generator HYDJET++ (HYDrodynamics with JETs) contains the description of both soft and hard processes in relativistic heavy-ion collisions by combining the parametrized hydrodynamics with the treatment ...
  • Syljuåsen, Olav Fredrik; Paaske, Jens; Schecter, Michael (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2019)
    We study the layered J1− J 2 classical Heisenberg model on the square lattice using a self-consistent bond theory. We derive the phase diagram for fixed J1 as a function of temperature T, J2, and interplane coupling Jz. ...
  • Fjellvåg, Asbjørn Slagtern; Hjelmeland, Trude Bjørgås; Mollatt, Hans Jakob; Qureishy, Thomas; Mikheenko, Pavlo (Chapter / Bokkapittel / SubmittedVersion, 2017)
    An anomalous magnetism is observed in an ex-situ bilayer of high-temperature superconductor YBa2Cu3O7-? (YBCO) and colossal magnetoresistive material La0.67Ca0.33MnO3 (LCMO). The magnetism results in strong in-plane ...
  • Hjelmeland, Trude Bjørgås (Master thesis / Masteroppgave, 2018)
    Thin-film bilayers of the high temperature superconducting compound YBa2Cu3O7−δ (YBCO) and the half-metallic colossal magnetoresistive material La0.67Ca0.33MnO3 (LCMO) have been investigated with electronic transport ...
  • Azarov, Alexander; Venkatachalapathy, Vishnukanthan; Karaseov, Platon; Titov, Andrei; Karabeshkin, Konstantin; Struchkov, Andrei; Kuznetsov, Andrej (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    Abstract Ion irradiation is a powerful tool to tune properties of semiconductors and, in particular, of gallium oxide (Ga 2 O 3 ) which is a promising ultra-wide bandgap semiconductor exhibiting phase instability for high ...
  • Karjalainen, Antti; Weiser, Philip Michael; Makkonen, I.; Reinertsen, Vilde Mari; Vines, Lasse; Tuomisto, Filip (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    Positron annihilation spectroscopy, Fourier transform-infrared absorption spectroscopy, and secondary ion mass spectrometry have been used to study the behavior of gallium vacancy-related defects and hydrogen in deuterium ...
  • Pedersen, Thomas Bondo; Kristiansen, Håkon Emil; Bodenstein, Tilmann; Kvaal, Simen; Schøyen, Øyvind Sigmundson (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    We demonstrate theoretically and numerically that laser-driven many-electron dynamics, as described by bivariational time-dependent coupled-cluster theory, may be analyzed in terms of stationary-state populations. Projectors ...